84 GEOLOGY. 



Kropotkin, P. [Researches on the Glacial Period.] Iswest. Imp. 

 Boss. Oeogr. Obw. vol. vii. pp. 827, with atlas of maps and wood- 

 cuts. St. Petersburg. 

 In two sections. Relates chiefly to the glacial phenomena of 

 Finland, and especially to the ascir. The main conclnsion is, that 

 Finland was covered with an immense ice-sheet creeping from Scandi- 

 navia across the Gulf of Bothnia, and crossing Finland in a S.E. direc- 

 tion. There are no traces of marine conditions above the level of 

 120 feet. W. H. D. 



Kvassay, Eugen v. Ueber den Natron- und Szekboden im unga- 

 rischen Tieflande. [Hungarian Soda-soils, &c.] Jahrh. h.-Tc. geol. 

 Reichs. Bd. xxvi. Heft 4, pp. 427-446. 

 Szekboden is a sort of soil, mouse-grey when dry, black when moist, 

 -which nourishes only a very few plants. It forms the uppermost 

 soil, occupies low ground, and is evidently the result of the washings of 

 rhyolitic tuffs ; it contains little lime, only traces of potassium and 

 phosphoric acid, but occasionally large amounts of soda. The geo- 

 graphical area, chemical composition, &c. of these soda-soils are de- 

 scribed, and their orighi discussed. E. B. T. 



Labat, A. La gTotte de Monsummano (Toscane). [The Grotto of 

 Monsummano, Tuscany.] Pp. 12. Paris. 



. Etude sur la station et les eaux de Montecatini, Italie (Tos- 

 cane). [Station and Waters of Montecatini, Tuscany.] Pp. 24. 

 Paris. 



Etude sur la station et les eaux de Ragatz-Pfaeffers. [Station 



and Waters of Ragatz-Pfgeffers.] Pp. 30. Paris. 



Lambert, Prof. G. Nouveau Bassin HouiUer decouvert dans le 

 Limbourg hollandais, Rapport de. [New Coalfield in Dutch Lim- 

 bourg.] Lithographed for private circulation, pp. 12, 2 maps, and 

 plate of sections. 4to. Louvain. Abstract translation with notes, 

 by G. A. Lebour, Geol. Mag. dec. 2, vol. iii. pp. 412-414. Trans- 

 lation in fuU, with plates, by T. W. Bunning, Trans. N. Engl. 

 Inst. Eng. vol. xxvi. pp. 15-25, plates iv.-vi. (1877). 

 The new field is in the N. part of the Ruhr basin, under Permian, 

 Cretaceous, and Tertiary beds ; its N. limit is not yet known. Details 

 of borings are given. W. H. D. 



Lapparent, Alb. de. Note sur la relation des faiUes et des gisements 

 eocenes du Nord de la France avec I'argile a silex. [On the Con- 

 nexion between the Faults and the Eocene Deposits of N. France 

 and the Clay-with-flints.] Bull. Soc. Geol. Fratice, 3 ser. t. iv. 

 pp. 348-351. 

 Shows that the Clay-with-flints of N. France is the result of purely 

 chemical action. 



